中文摘要：

将在汽轮机叶片上经常采用的阻尼拉金减振方法借鉴应用到TRT叶片,设计了多种圆柱阻尼拉金结构并建立分析模型,通过分析获得各自的力学性能,依据力学性能选取性能最为理想的阻尼结构。对每个模型进行了静态分析,并重点对拉金孔处、过渡曲面处、一二级榫齿槽面等应力敏感区域进行切片分析;对计算结果采用最小二乘法拟合出应力与拉金孔直径和位置之间的变化规律曲线;综合考虑各种阻尼结构的力学特性,采用分级加权评价方法,得出了力学性能最优的叶片阻尼结构。

英文摘要：

The damping lashing wire method used widely in gas turbine blade vibration reduction is introduced to the TRT blade in this study. A variety of the models with different cylindrical damping lashing wire structures are established. Their mechanical properties are obtained through analyses. Based on the static analysis result of each model, the most ideal damping structure is chosen. Since the key locations such as lashing wire hole, transitional surfaces and the groove faces of the two-stage tendon teeth, are probably sensitive to stress, the slicing analyses are given focused on them. Secondly, the curves of the lashing wire diameters of the hole and their locations are drawn by using the least square method with the calculated results. Finally, the mechanical characteristics of all damping structures are considered comprehensively and the damping structure that has the optimum mechanical property is obtained by using the weighting evaluation method.